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USA | |
| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
- Gosnold (Elizabeth Islands)
| Weed, E.G. A. (1988): Mesozoic and Tertiary Stratigraphy of Cape Cod and Nearby Islands, in Hatch, N.L., Jr., editor, 1988, The bedrock geology of Massachusetts: U.S. Geological Survey, Professional Paper 1366-A-D. |
| Robinson, Samuel (1825): A Catalogue of American Minerals, with Their Localities, p.49. |
| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
| Weed, E.G. A. (1988): Mesozoic and Tertiary Stratigraphy of Cape Cod and Nearby Islands, in Hatch, N.L., Jr., editor, 1988, The bedrock geology of Massachusetts: U.S. Geological Survey, Professional Paper 1366-A-D. |
| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
Gay Head Cliffs, Aquinnah, Martha's Vineyard, Dukes County, Massachusetts, USA